<!--**
 * 2007-2017 PrestaShop
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * https://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@prestashop.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to http://www.prestashop.com for more information.
 *
 * @author    PrestaShop SA <contact@prestashop.com>
 * @copyright 2007-2017 PrestaShop SA
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * International Registered Trademark & Property of PrestaShop SA
 *-->
<template>
  <div>
    <div class="m-b-1 tree-header">
      <span class="text-uppercase pointer" @click="expand">
        <i class="material-icons">keyboard_arrow_down</i>
        <strong v-if="translations">{{translations.expand}}</strong>
      </span>
      <span class="pull-right text-uppercase pointer" @click="reduce">
        <i class="material-icons">keyboard_arrow_up</i>
        <strong v-if="translations">{{translations.reduce}}</strong>
      </span>
    </div>
    <ul class="tree" :class="className">
      <li v-for="(element, index) in model">
        <PSTreeItem
          ref="item"
          :hasCheckbox="hasCheckbox"
          :model="element"
          :label="element.name"
          :translations="translations"
          :currentItem="currentItem"
          @checked="onCheck"
          @setCurrentElement ="setCurrentElement"
        />
      </li>
    </ul>
  </div>
</template>

<script>
  import PSTreeItem from './ps-tree-item';
  import { EventBus } from 'app/utils/event-bus';

  export default {
    name: 'PSTree',
    props: {
      model: Array,
      className: String,
      currentItem: String,
      hasCheckbox: Boolean,
      translations: {
        type: Object,
        required: false,
      },
    },
    methods: {
      onCheck(obj) {
        this.$emit('checked', obj);
      },
      expand() {
        EventBus.$emit('expand');
      },
      reduce() {
        EventBus.$emit('reduce');
      },
      setCurrentElement(id) {
        EventBus.$emit('setCurrentElement', id);
      },
    },
    components: {
      PSTreeItem,
    },
  };
</script>

<style lang="sass" scoped>
  @import "~PrestaKit/scss/custom/_variables.scss";
  ul {
    list-style-type: none;
    cursor: pointer;
    padding: 0;
    margin: 0;
  }
  strong {
    font-weight: 600;
  }
  .tree-header {
    border-bottom: $gray-light 1px solid;
    color: $gray-medium;
  }
  .material-icons {
    vertical-align: middle;
  }
  .pointer {
    cursor: pointer;
  }
</style>
